Open equipment for continuous growth of carbon nanomaterial and preparation method

A carbon nanomaterial and open technology, applied in the direction of carbon nanotubes, nanocarbons, chemical instruments and methods, etc., can solve the problems of inability to realize graphene continuous production and limited production efficiency, so as to reduce product damage and improve production Efficiency and yield improvement effect

Active Publication Date: 2019-02-15
SHENZHEN NASO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this type of roll-to-roll equipment must still be a closed system that works under low pressure and normal pressure. After one roll is produced, it must be stopped to change the roll. The production efficiency is still limited, and it is impossible to realize the open continuous production of graphene in the atmosphere. Not to mention integration with graphene end product line

Method used

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  • Open equipment for continuous growth of carbon nanomaterial and preparation method
  • Open equipment for continuous growth of carbon nanomaterial and preparation method
  • Open equipment for continuous growth of carbon nanomaterial and preparation method

Examples

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Embodiment 1

[0048] Such as figure 1 Shown, the present invention provides a kind of equipment of open type continuously growing carbon nanomaterials, comprises the metal foil band feeding system I, CVD system II and collection system III that are all in open gas; Metal foil band feeding system I is used The metal foil strip 2 is transported from the atmosphere to the CVD system II; the CVD system II is used to react to generate carbon nanomaterials, and the metal foil strip 2 enters the collection system III after attaching carbon nanomaterials in the CVD system II; wherein, the CVD system II Including CVD furnace 6 and control system (not shown in the figure), CVD furnace 6 is connected with control system signal, the entrance and exit of CVD furnace 6 are respectively sealed with a slit coupler 5, each slit coupler In the axial direction of 5, there is at least one slit 12 with one end connected to the CVD furnace 6 and the other end open to the atmosphere, and the slits 12 on the two s...

Embodiment 2

[0064]Provide below the method that adopts above-mentioned equipment to grow monolayer, continuous, high-quality graphene film on copper foil tape:

[0065] It should be noted that this method uses the simplest equipment. Metal foil belt feeding systems such as figure 1 As shown, the pretreatment system 11 is not included. The CVD system II is not equipped with an online quality monitoring system 9 , and the CVD furnace 6 is a vertical single-section quartz tube single heating furnace with a diameter of 25 mm and each slit coupler has only one slit 12 . Collection system III does not include aftertreatment system 16 . Both the carrier gas and the protective gas are argon, and the reaction gases are hydrogen and methane. The concentration of hydrogen and methane is diluted by argon to below the explosion limit. Of course, methane can also be replaced by ethane, acetylene, ethylene, (vaporized) alcohol etc. Unless otherwise specified, all gases are high-purity gases, which a...

Embodiment 3

[0078] This embodiment adopts the equipment described in embodiment one to grow a multilayer continuous graphene film on a nickel foil strip, and the difference from embodiment two is that:

[0079] 1. Metal foil strip 2 is nickel foil strip (11 mm wide, 25 μm thick, purity 99.9%).

[0080] 2. The conveying speed of the nickel foil belt is 300-600mm / min.

[0081] 3. The growth setting temperature range is 500-900°C, preferably 750-900°C. The higher the temperature, the faster the growth rate and the faster the conveying speed of the nickel foil belt. In the case of the same conveying speed, the slower the conveying speed of the nickel foil belt, the more layers of graphene; or in the case of constant conveying speed of the nickel foil belt, the higher the temperature, the more layers of graphene.

[0082] 4. For the results of laser Raman characterization, see Figure 7 ,Depend on Figure 7 It can be seen that the intensity of the 2D peak is lower than that of the G peak, i...

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Abstract

The invention discloses open equipment for continuous growth of a carbon nanomaterial and a preparation method. The equipment comprises a metal foil tape feeding system, a CVD (chemical vapor deposition) system and a collection system. The method comprises the steps as follows: a pretreated or non-pretreated metal foil tape is continuously conveyed into a chemical vapor deposition system through the metal foil tape feeding system, in the system, a required carbon nanomaterial is deposed on the surface of the metal foil tape by a chemical vapor deposition method, and then, the carbon nanomaterial is directly collected by the collection system or integrated into a post-treatment system to be post-treated directly and even directly produced into a carbon nanomaterial terminal product. All thesystems are placed in the open atmosphere instead of a sealed space isolated from the air. 24h continuous operation every day can be realized and the growth efficiency of the carbon nanomaterial is greatly improved.

Description

technical field [0001] The invention relates to the field of chemical vapor deposition (CVD) equipment for the growth of carbon nanomaterials (such as graphene or carbon nanotubes, etc.), in particular to a method of continuously inputting metal foil from the atmosphere into the equipment under micro positive pressure or positive pressure conditions After the CVD process, the metal foil strip is continuously output, and the surface of the output foil strip has grown the required product. The equipment and preparation method of the open continuous growth of carbon nanomaterials. Background technique [0002] Graphene and carbon nanotubes, like diamond and graphite, are all carbon allotropes. Graphene can be vividly understood as a two-dimensional crystal with a thickness of only one atom extracted from a single crystal graphite crystal. In a looser context, nanomaterials consisting of a few layers of graphene are also called graphene. Carbon nanotubes are classified into si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/186C01B32/162
CPCC01B32/162C01B32/186C01B32/16C01B32/164C23C16/545C23C16/26C23C16/4409C23C16/4418C23C16/45519C23C16/4412C23C16/0281C23C16/0227C23C16/0254C23C16/0272C23C16/52C23C16/56C01B32/15C01B32/182C01B32/158C01B32/184
Inventor 钟国仿张灿
Owner SHENZHEN NASO TECH CO LTD
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